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Finding the Fourth Proportional to 951.17, 1,313.33 and 715.46

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Solution

The fourth proportional to 951.17, 1,313.33 and 715.46 is: 987.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.17 : 1,313.33 = 715.46 : x
  2. Step 2: Convert to fraction form
    951.17/1,313.33 = 715.46/x
  3. Step 3: Cross multiply
    951.17x = 1,313.33 × 715.46
  4. Step 4: Simplify right side
    951.17x = 939,624.94
  5. Step 5: Solve for x
    x = 939,624.94/951.17
  6. Step 6: Final answer
    x = 987.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.